US3775715A - Magnetic system for relays - Google Patents

Magnetic system for relays Download PDF

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Publication number
US3775715A
US3775715A US00258411A US3775715DA US3775715A US 3775715 A US3775715 A US 3775715A US 00258411 A US00258411 A US 00258411A US 3775715D A US3775715D A US 3775715DA US 3775715 A US3775715 A US 3775715A
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US
United States
Prior art keywords
auxiliary
armature
permanent magnet
main
magnetic
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.)
Expired - Lifetime
Application number
US00258411A
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English (en)
Inventor
W Bosch
G Sticker
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.)
Siemens AG
Siemens Corp
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Siemens Corp
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Publication date
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Publication of US3775715A publication Critical patent/US3775715A/en
Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2236—Polarised relays comprising pivotable armature, pivoting at extremity or bending point of armature

Definitions

  • ABSTRACT A magnetic system for relays, particularly poled relays, wherein at least one pole shoe coverin Germany........-..........
  • a portion of a pole surfaceof a permanent magnet guides the magnetic flow of a particular region of the magnet primarily through'a main armature, while the magnetic flow from another particular region of the permanent 3 "5 m m m ⁇ d m m mum C "mm m mm M: m :4 m mTm e mr R a He "ms .1 t C L Smk UI-F ll] 2 00 6 555 5 [[l magnet is guided primarily by way of an auxiliary armature.
  • agmagnetsystem is desired which, depending upon the:particularap- :plication req'uirements, can-be provided with a more or less r large number of spring sets -withoutrequiring .
  • German LettersPat'. .No'. 1,188,455 discloses-the rprovision of adjusting :the' holding power; poles .of .the main, armature and of the auxiliary armature independently of each other-for an electromagneticrelay. ln
  • the foregoing object is achieved in such a way Jthat,-;by means of arranging at least one pole shoe covering a partial pole surface of the permanent magnet or the permanent magnet arrangement, respectively, the magnetic current from a particular partial. region of the permanent magnet or :the permanent magnet. arrangement, respectively, is primarily guided by way of the main armature, andthe rnagnetic current from aparticular otherpartial region is primarilyguided by way of the auxiliary armature.
  • the two magnetic ranges can be adjustedto given values by external magnetic fields, separately from each other.
  • the two regions of asingle permanent magnet therefore have the effect of two separate magnets since the magnetic current emerging from'theseregions have little influence .on each other'and are therefore essentially independent.
  • the excitation coil can be envelope in a U-shaped yokewhose centrahportion partially covers a pole surface of thepermanent magnet as apole shoe.
  • an auxiliary .pole plate constructed of soft magneticmaterial can be arranged between the core of the excitation coil and the permanent magnet.
  • the main armature and'the auxiliary armature are constructed as a single piece.
  • l rln the construction of acfurtherdevelopment ofg the invention, it is.providedrthatrtwoseparatepelegshoesgbe I arranged above the. permanent magnet, oneoftherpole degree is particularly well expressed.
  • the auxiliary armature can be shaped in such a way that it angularly embraces the corresponding portion of the permanent magnet.
  • Strontium oxide is utilized as the material for the permanent magnet, since this material can be magnetized extremely wellin the direction of its thicknessso that r,
  • FIG. 1 is an elevational view of the basic construction of a magnet system according to the present invention
  • FIG. 2 is a perspective view of a magnet system for a practical embodiment of the invention having a U- shaped yoke;
  • FIG. 3 is an elevational view, in section, of a magnet system having two poleshoes at the permanent magnet;
  • FIG. 4 is an elevational view, in section, of a magnet system with a poleshoeand an auxiliary armature havmagnet; l
  • FIG. 5 is an illustration of an arrangement for the magnetic balancing of the permanent magnet particularly showing a magnetic system construction such as illustrated in FIGS. 1 and 2;
  • FIG. 6 is an illustration of an arrangement similar to the other magnetic structures, but, which utilizes two permanent magnets.
  • FIG. 1 the basic arrangement of a magnet system according to the present invention and the guidance of the current attained thereby is illustrated.
  • the magnet system comprises a coil I wound about a core 2, with a main pole piece 3 disposed at one end thereof and an auxiliary pole piece 4 mounted at the other end thereof.
  • Thecoil l is an excitation coil which is traverse by an electrical current in one direction or the other for producing the attraction and drop excitations of a relay.
  • a permanent magnet 5 is disposed adjacent to the auxiliary pole piece 4 and serves for maintaining therespective armature positions of the relay.
  • the pennanent relay 5 is polarized in-the direction of the longitudinal axis of the coil 1; thereby, the pole surface which is facing away from the coil 1 or the auxiliary pole piece 4, respectively, is partially covered-by a pole shoe 6 which guides a portion of the current from the excitation coil 1- and from the permanent magnet 5 toward the main armature 8 by way of a yoke 7.
  • the main armature 8 is constructed as a single piece with an auxiliary armature 9 and forms an-angle of somewhat more than 90 therewith.
  • the pole shoe 6 it'can be magnetically regarded as two parts so that a main permanent magnet part ,5a and an auxiliary permanent m'agnet part 5b can be recognized.
  • the current or flux (#1 which is'produced in the main part 5a of the permanent magnetS therefore closes to a predominant degree by way of the auxiliary pole piece 4, the core -2, the main pole piece 3, the main armature 8, the yoke 7, and the pole shoe 6. Accordingly,'a magnetic force is producedin the main air gaps L1 and L2, between the armature 8 and the main pole piece 3 and the yoke 7, respectively, which affects the main armature 8.
  • the permanent magnet current (b2, however, whichis produced in the auxiliary part 5b of the permanent magnet 5 is guided to the greatest extent to the auxiliary armature 9 by way ofthe auxiliary pole piece 4, and from there back to the auxiliary part 5b, whereby it bridges the air gaps L3 and L4.
  • FIG. 3 illustrates'a magnet system having a U-shaped yoke as in FIG. 2, but with a slightly different construction. A lateral view has been provided in section whereby the individual parts can still bewell recog-.
  • the magnet system again comprises an excitation coil 21 having a core 22, a main pole piece 23 and an auxiliary pole piece 24.
  • a permanent magnet 25 is arranged at the auxiliary pole piece 24, and one of its pole surfaces is partially covered and magnetically connected with the yoke 27 byway of a pole shoe 26.
  • a portion of the permanent magnet current is extended from the range 25a of the permanent magnet 25 by way of the main armature 28.
  • a pole shoe 26a is also provided and arranged to cover and be magnetically connected to a portion of the aforementioned surface in a second range 25bof the-permanent magnet25.
  • the pole shoe 26a serves to guide'the permanent magnet current from the range 25b toward the auxiliary armature 29.
  • FIG-4 a further embodiment of a magnet system according to the invention 'has been illustrated.
  • the permanentmagnetcurrent is again guided by'wayof aipole shoe.36 toward a yoke 37 and thus toward a main armature 38 from a range 35a of a permanent magnet 35,,while th'e current from a range 35b of the "magnet 35 closes by way of an auxiliary armature 39.
  • the auxiliary armature39 comprises aprojection 39a to provide an angular inclination of the armature which embraces at least the oppositely facing-portions of the auxiliary part 35b of the permanent magnet 35 and therefore provides an auxiliary air gap with respect thereto.
  • FIG. 5 illustrates a simple arrangement for the mag- V netic balancing of a magnetic system according to the present invention.
  • the magnet system illustrated in ,FIG. 5 is constructed in the same manner as the magnet systems illustrated in FIGS. 1 and 2 and needsonfurther detail descriptionIBy means of coupling a direct magnetic field of suitable strengthto vthe permanent magnet 41, a separate'adjustment of two magnetic portions 41a and 41b is possible.
  • a magnet coil 42 having a demagnetizing yoke43 is applied to the permanent magnet4l or tothepole shoe '44, respectively, in such a way that the field lines of the de-.
  • FIG. 6 illustrates a further embodiment of the magnetic system according to'the present invention.
  • This internal magnetic separation is now carried out in FlG.'6'by the provision of two permanent magnets 55a and 55b which are arranged spaced side-by-side and parallel to each other and structed similar to the magneticsystem according to FIG. 1 in that it comprises an excitation winding or coil 7 "51, a core 52 and a-main pole piece 53.
  • A"main armature 58 is effective withthe mainpolepiece'53, while an auxiliary armature 59formsan operational .airgap with the auxiliary pole piece 54.
  • 'Asubdivisionofthe Permanent magnet into two separate partial magnets which, however, arearranged-parallel to-each-other 6 could also be carriedout in the same manner with respect to the constructions according to FIGS. '3and4.
  • auxiliary armature is arranged at approximately a rightangle with said'main armature and defines operational air gaps with said second portion of saidpermanent magnet and said auxiliary pole piece.
  • said armature means includes .a. single g piece which comprisessaid main and auxiliary armatures;
  • the imthe type having a coil with oppositely disposed poles energizable in either direction longitudinally of the coil to place the relay in its respective stable states, and at least one permanent magnet for holding the relay in a stable state, and wherein the magnetic current flow resulting from the superposition of the excitation magnet provement comprising: at least one pole shoe covering and magnetically connected with only a portion of one I pole surface of the permanent magnet and extending to a point adjacent said main armature, whereby the magnetic current flow of a first region of said magnet is guided primarily via the main armature and the magnetic current flow from a second region of said magnetic is guided primarily via the auxiliary armature, said permanent magnet poled to produce magnetic current directions in the first and second regions and the associated main and auxiliary arrnatures which are respectively aided and opposed in response to energization of said coil in a given direction.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Linear Motors (AREA)
US00258411A 1971-07-07 1972-05-31 Magnetic system for relays Expired - Lifetime US3775715A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2133931A DE2133931C3 (de) 1971-07-07 1971-07-07 Magnetsystem für Relais

Publications (1)

Publication Number Publication Date
US3775715A true US3775715A (en) 1973-11-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00258411A Expired - Lifetime US3775715A (en) 1971-07-07 1972-05-31 Magnetic system for relays

Country Status (13)

Country Link
US (1) US3775715A (cs)
AT (1) AT318745B (cs)
BE (1) BE786006A (cs)
CH (1) CH551688A (cs)
DE (1) DE2133931C3 (cs)
ES (1) ES403520A1 (cs)
FR (1) FR2144880B1 (cs)
GB (1) GB1361950A (cs)
IT (1) IT962951B (cs)
LU (1) LU65666A1 (cs)
NL (1) NL7209206A (cs)
NO (1) NO131771C (cs)
SE (1) SE375644B (cs)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020434A (en) * 1975-01-27 1977-04-26 Siemens Aktiengesellschaft Polarized electromagnetic relay and method of manufacturing the same
US4237439A (en) * 1977-08-23 1980-12-02 Olympus Optical Co., Ltd. Release electromagnet assembly
US4288771A (en) * 1979-02-16 1981-09-08 Minolta Camera Kabushiki Kaisha Electromagnetic driven device
US4321652A (en) * 1979-04-30 1982-03-23 Minnesota Mining And Manufacturing Co. Low voltage transformer relay
US4339734A (en) * 1980-02-04 1982-07-13 International Standard Electric Corporation Encased miniature relay
US4385280A (en) * 1979-04-30 1983-05-24 Minnesota Mining And Manufacturing Company Low reluctance latching magnets
US4391741A (en) * 1977-03-10 1983-07-05 Asahi Kasei Kogyo Kabushiki Kaisha Polyoxymethylene composition
US4437081A (en) 1982-12-28 1984-03-13 Minnesota Mining And Manufacturing Company Rocking armature transformer relay
US4461207A (en) * 1980-11-17 1984-07-24 International Business Machines Corporation Actuator mechanism for a printer or the like using dual magnets
DE3332487A1 (de) * 1983-04-09 1984-10-18 Original Electric Mfg. Co. Ltd., Tokio/Tokyo Elektromagnetisches relais
EP1811536A1 (fr) * 2006-01-20 2007-07-25 Areva T&D Sa Actionneur magnetique a aimant permanent a volume reduit
US8502627B1 (en) * 2012-09-19 2013-08-06 International Controls And Measurements Corporation Relay with stair-structured pole faces
US20140055223A1 (en) * 2012-08-24 2014-02-27 Omron Corporation Electromagnet device, method of assembling the same, and electromagnetic relay using the same
CN103632889A (zh) * 2012-08-24 2014-03-12 欧姆龙株式会社 电磁铁装置
US20140246928A1 (en) * 2013-03-01 2014-09-04 Governors America Corporation Electromagnetic actuator having enhanced magnetic structures

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2905498C2 (de) * 1979-02-14 1986-10-09 Standard Elektrik Lorenz Ag, 7000 Stuttgart Miniaturrelais
DE3438275C1 (de) * 1984-10-18 1989-11-23 SDS-Relais AG, 8024 Deisenhofen Gepoltes elektromagnetisches Relais

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2276535A (en) * 1938-09-30 1942-03-17 Associated Electric Lab Inc Control device
US2941130A (en) * 1956-09-14 1960-06-14 Siemens Ag Polarized relay
GB892844A (en) * 1957-08-30 1962-04-04 Ericsson Telephones Ltd Improvements in and relating to polarised electromagnetic relays
US3116481A (en) * 1960-12-27 1963-12-31 Bell Telephone Labor Inc Electromagnetically operated polarized bell ringer
US3195023A (en) * 1961-04-28 1965-07-13 Siemens Ag Electromagnetic relay
US3317871A (en) * 1965-09-20 1967-05-02 Leach Corp Magnetically operated actuator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2276535A (en) * 1938-09-30 1942-03-17 Associated Electric Lab Inc Control device
US2941130A (en) * 1956-09-14 1960-06-14 Siemens Ag Polarized relay
GB892844A (en) * 1957-08-30 1962-04-04 Ericsson Telephones Ltd Improvements in and relating to polarised electromagnetic relays
US3116481A (en) * 1960-12-27 1963-12-31 Bell Telephone Labor Inc Electromagnetically operated polarized bell ringer
US3195023A (en) * 1961-04-28 1965-07-13 Siemens Ag Electromagnetic relay
US3317871A (en) * 1965-09-20 1967-05-02 Leach Corp Magnetically operated actuator

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020434A (en) * 1975-01-27 1977-04-26 Siemens Aktiengesellschaft Polarized electromagnetic relay and method of manufacturing the same
US4391741A (en) * 1977-03-10 1983-07-05 Asahi Kasei Kogyo Kabushiki Kaisha Polyoxymethylene composition
US4237439A (en) * 1977-08-23 1980-12-02 Olympus Optical Co., Ltd. Release electromagnet assembly
US4288771A (en) * 1979-02-16 1981-09-08 Minolta Camera Kabushiki Kaisha Electromagnetic driven device
US4321652A (en) * 1979-04-30 1982-03-23 Minnesota Mining And Manufacturing Co. Low voltage transformer relay
US4385280A (en) * 1979-04-30 1983-05-24 Minnesota Mining And Manufacturing Company Low reluctance latching magnets
US4339734A (en) * 1980-02-04 1982-07-13 International Standard Electric Corporation Encased miniature relay
US4461207A (en) * 1980-11-17 1984-07-24 International Business Machines Corporation Actuator mechanism for a printer or the like using dual magnets
US4437081A (en) 1982-12-28 1984-03-13 Minnesota Mining And Manufacturing Company Rocking armature transformer relay
DE3332487A1 (de) * 1983-04-09 1984-10-18 Original Electric Mfg. Co. Ltd., Tokio/Tokyo Elektromagnetisches relais
EP1811536A1 (fr) * 2006-01-20 2007-07-25 Areva T&D Sa Actionneur magnetique a aimant permanent a volume reduit
US20070171016A1 (en) * 2006-01-20 2007-07-26 Areva T&D Sa Permanent-magnet magnetic actuator of reduced volume
FR2896615A1 (fr) * 2006-01-20 2007-07-27 Areva T & D Sa Actionneur magnetique a aimant permanent a volume reduit
US8013698B2 (en) 2006-01-20 2011-09-06 Areva T&D Sa Permanent-magnet magnetic actuator of reduced volume
US20140055223A1 (en) * 2012-08-24 2014-02-27 Omron Corporation Electromagnet device, method of assembling the same, and electromagnetic relay using the same
CN103632889A (zh) * 2012-08-24 2014-03-12 欧姆龙株式会社 电磁铁装置
EP2701164A3 (en) * 2012-08-24 2014-09-10 Omron Corporation Electromagnet device
US9070501B2 (en) * 2012-08-24 2015-06-30 Omron Corporation Electromagnet device, method of assembling the same, and electromagnetic relay using the same
US9153403B2 (en) 2012-08-24 2015-10-06 Omron Corporation Electromagnet device
CN103632889B (zh) * 2012-08-24 2016-10-12 欧姆龙株式会社 电磁铁装置
US8502627B1 (en) * 2012-09-19 2013-08-06 International Controls And Measurements Corporation Relay with stair-structured pole faces
US20140246928A1 (en) * 2013-03-01 2014-09-04 Governors America Corporation Electromagnetic actuator having enhanced magnetic structures
US9728315B2 (en) * 2013-03-01 2017-08-08 Governors America Corporation Electromagnetic actuator having enhanced magnetic structures

Also Published As

Publication number Publication date
FR2144880B1 (cs) 1977-07-22
CH551688A (de) 1974-07-15
NO131771C (cs) 1975-07-23
ES403520A1 (es) 1975-04-16
DE2133931C3 (de) 1974-05-16
AT318745B (de) 1974-11-11
GB1361950A (en) 1974-07-30
IT962951B (it) 1973-12-31
FR2144880A1 (cs) 1973-02-16
DE2133931A1 (de) 1973-01-18
SE375644B (cs) 1975-04-21
DE2133931B2 (de) 1973-10-18
BE786006A (fr) 1973-01-08
NL7209206A (cs) 1973-01-09
LU65666A1 (cs) 1973-01-26
NO131771B (cs) 1975-04-14

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