US2866927A - Permanent-magnet armature for polarized electromagnetic systems, in particular for polarized relays - Google Patents

Permanent-magnet armature for polarized electromagnetic systems, in particular for polarized relays Download PDF

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Publication number
US2866927A
US2866927A US532972A US53297255A US2866927A US 2866927 A US2866927 A US 2866927A US 532972 A US532972 A US 532972A US 53297255 A US53297255 A US 53297255A US 2866927 A US2866927 A US 2866927A
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US
United States
Prior art keywords
permanent
polarized
armature
magnet
bow
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
US532972A
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English (en)
Inventor
Berg Herbert
Fischer Josef
Krautwald Herbert
Ruhland Alois
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 and Halske AG
Siemens Corp
Original Assignee
Siemens Corp
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 Siemens Corp filed Critical Siemens Corp
Application granted granted Critical
Publication of US2866927A publication Critical patent/US2866927A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H49/00—Apparatus or processes specially adapted to the manufacture of relays or parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2227—Polarised relays in which the movable part comprises at least one permanent magnet, sandwiched between pole-plates, each forming an active air-gap with parts of the stationary magnetic circuit

Definitions

  • the mounting of the permanent magnet to be provided in the armature offers difficulties insofar as the material of high-grade magnets is extraordinarily hard and -very brittle so that it can be processed only with great difficulty and possesses relatively poor characteristics as to tensile strength, etc., whereby it does not satisfactorily withstand the pulling and bending stresses to which it may be subjected.
  • the invention relates to a method of mounting that requires no special processing of the permanent-magnet body whatsoever and introduces merely a compression stress on the latter.
  • the permanent-magnet body carries at either end pole piece plates interworking with corresponding pole pieces of the stator, this has been achieved in accordance with the invention by means whereby the permanent-magnet body may be loosely placed between the plates and firmly clamped together with a clamping strap gripping around the plates.
  • This type of assembly can be carried out very simply and used to advantage in particular also for very small polarized armatures.
  • the clamping strap itself is supported, hinged in a suitable manner with pivots or ribbons on the relay frame or casing.
  • Fig. l is a schematic or semi-diagrammatic layout of a polarized relay illustrating the magnetic relationships
  • Fig. 2 is a side elevational view of an armature structure embodying the present invention
  • Fig. 2a is a sectional view taken approximately through the center of the clamping structure
  • Fig. 3 is an elevational view similar to Fig. 2 of another embodiment of the invention.
  • Fig. 3a is a sectional view similar to Fig. 2a of the structure illustrated in Fig. 3;
  • Fig. 4 is a side elevational view of still another embodiment of the invention.
  • v Fig. 4a is a partial transverse sectional view, similar to Figs. 2a and 3a of the embodiment illustrated in Fig. 4-.
  • the clamping strap may be designed in different ways, three embodiments thereof being shown schematically in Figs. 2, 3 and 4 of the drawing.
  • Fig. l of the drawing shows first the schematical layout of the polarized relay.
  • the armature is essentially shaped as a double-T and consists of the cube-shaped or parallelepiped-shaped permanent-magnet body a and the pole-piece plates a and a bearing on it at either side. Between these plates project from above and below the pole pieces b and b of the stator that are connected to the core of the relay coil d by the yokes c and The armature is permanently magnetized in the direction of the arrows shown in the drawing and produces the cona corporation of Patented'Dec. 3Q, 1958 tively. of this excitation to cause a deflection of the arma-:
  • the armature may actuate suitable means, as for example, a set of contact springs not shown in the drawing.
  • the clamping strap retaining the permanent-magnet body a and the pole piece plates a and a together comprises a U-shaped bow e and a spring clip 1 slidable over the ends of the bow legs and having tong-shaped points f which may enter corresponding openings 2 of the bow legs.
  • the plates a and a may have recesses corresponding to the width of the how 2 over which the bow is slipped.
  • the bow may also be provided with pivots z or other suitable means for supporting the armature.
  • the bow E is designed as a resilient strap.
  • the crossbar is bulged out and bears against the left-hand resilient plate a
  • the parts a, a and a may be slid loosely one behind the other into the bow; following which the crossbar may be sprung sufiiciently to permit lugs a provided at the ends of the bow leg to fall behind the edges of the outer plate a as clearly illustrated in Fig. 3a.
  • the bow E carries again in a suitable manner the pivots z, or other means supporting the armature.
  • Figs. 4 and 4a is generally similar to that illustrated in Figs. 2 and 2a, but the arrangement in accordance with Fig. 4 uses instead of the resilient clamping strap 1 of Fig. 2, a clamping plate p slid through corresponding openings of the legs of the bow e and containing two grub screws st screwed against the pole piece sheet a located at the right and thus bracing the armature parts a, a and a firmly against each other.
  • the present invention enables the assembly of the loose magnet and pole pieces by a simple structure which introduces compression forces on the components to firmly retain the latter in operative position and eliminating any necessity of placing the magnet structure or associated elements under bending or other stresses to which the magnet, due to the characteristics of the material comprising the same, is not suited.
  • a permanent-magnet armature for polarized relays, the combination of a pair of spaced pole pieces, a permanent-magnet body interposed between the pole pieces, a connecting structure having spaced members bridging the pole pieces at opposite sides of the magnet body, elements associated with the spaced members at the respective ends thereof and engageable with adjacent pole pieces, at least one of said elements being movable in a direction toward or away from the adjacent pole piece and cooperable with an element adjacent the opposite pole piece to exert compression forces on the armature assembly to retain the same in fixed assembled relation.
  • said resilient-element ' is a; spring of substantially U-shapehaving inwardly turned" ends adapted to enter into corresponding openings in the bow legs to operatively connect the same, said-spring havinga bow therein bearing in a resilient manneragainst' the outer face of the adjacent p'ole piece.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electromagnets (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
US532972A 1954-09-09 1955-09-07 Permanent-magnet armature for polarized electromagnetic systems, in particular for polarized relays Expired - Lifetime US2866927A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES14677U DE1712128U (de) 1954-09-09 1954-09-09 Dauermagnetanker fuer polarisierte magnetsysteme.

Publications (1)

Publication Number Publication Date
US2866927A true US2866927A (en) 1958-12-30

Family

ID=32403093

Family Applications (1)

Application Number Title Priority Date Filing Date
US532972A Expired - Lifetime US2866927A (en) 1954-09-09 1955-09-07 Permanent-magnet armature for polarized electromagnetic systems, in particular for polarized relays

Country Status (6)

Country Link
US (1) US2866927A (enrdf_load_html_response)
BE (1) BE541185A (enrdf_load_html_response)
CH (1) CH336503A (enrdf_load_html_response)
DE (1) DE1712128U (enrdf_load_html_response)
FR (1) FR1130909A (enrdf_load_html_response)
GB (1) GB779429A (enrdf_load_html_response)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3270300A (en) * 1962-04-26 1966-08-30 Hammond Organ Co Reverberation unit magnetic assembly
US3906416A (en) * 1973-11-12 1975-09-16 Anthony E Sprando Electrical relay
US4191937A (en) * 1977-04-18 1980-03-04 Manufacture Francaise D'appareils Electriques De Mesure Electromagnet magnetic circuit with permanent-magnet armature
US4325043A (en) * 1980-02-25 1982-04-13 Siemens Aktiengesellschaft Polarized magnet system
US4553118A (en) * 1981-06-15 1985-11-12 Omron Tateisi Electronics Co. Polarized electromagnetic device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3661513A (en) * 1970-08-14 1972-05-09 Cities Service Co Manufacture of alkali metal phosphates
DE3324246C2 (de) * 1983-07-06 1985-11-28 Hengstler GmbH, 7209 Wehingen Polarisiertes, elektromagnetisches Relais

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1256426A (en) * 1914-05-23 1918-02-12 Louis E Batzley Filing binder-clip.
US1847012A (en) * 1929-10-17 1932-02-23 Leon Hatot Ets Electromagnet
US2435487A (en) * 1943-02-01 1948-02-03 Zenith Radio Corp Electromechanical vibrator
US2517214A (en) * 1948-02-18 1950-08-01 Kent Lab Inc Oscillatory electric motor
CA479106A (en) * 1951-12-04 E. Willing Joseph Relays
DE923563C (de) * 1943-12-05 1955-02-17 Siemens Ag Gepoltes elektromagnetisches Relais
US2716795A (en) * 1952-01-02 1955-09-06 Bartelt Engineering Co Clamping device
FR1103207A (fr) * 1953-09-24 1955-10-31 Siemens Ag Dispositif d'électro-aimant polarisé à armatures vibrantes à magnétisme permanent

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA479106A (en) * 1951-12-04 E. Willing Joseph Relays
US1256426A (en) * 1914-05-23 1918-02-12 Louis E Batzley Filing binder-clip.
US1847012A (en) * 1929-10-17 1932-02-23 Leon Hatot Ets Electromagnet
US2435487A (en) * 1943-02-01 1948-02-03 Zenith Radio Corp Electromechanical vibrator
DE923563C (de) * 1943-12-05 1955-02-17 Siemens Ag Gepoltes elektromagnetisches Relais
US2517214A (en) * 1948-02-18 1950-08-01 Kent Lab Inc Oscillatory electric motor
US2716795A (en) * 1952-01-02 1955-09-06 Bartelt Engineering Co Clamping device
FR1103207A (fr) * 1953-09-24 1955-10-31 Siemens Ag Dispositif d'électro-aimant polarisé à armatures vibrantes à magnétisme permanent

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3270300A (en) * 1962-04-26 1966-08-30 Hammond Organ Co Reverberation unit magnetic assembly
US3906416A (en) * 1973-11-12 1975-09-16 Anthony E Sprando Electrical relay
US4191937A (en) * 1977-04-18 1980-03-04 Manufacture Francaise D'appareils Electriques De Mesure Electromagnet magnetic circuit with permanent-magnet armature
US4325043A (en) * 1980-02-25 1982-04-13 Siemens Aktiengesellschaft Polarized magnet system
US4553118A (en) * 1981-06-15 1985-11-12 Omron Tateisi Electronics Co. Polarized electromagnetic device

Also Published As

Publication number Publication date
BE541185A (enrdf_load_html_response)
DE1712128U (de) 1955-12-01
GB779429A (en) 1957-07-17
CH336503A (de) 1959-02-28
FR1130909A (fr) 1957-02-13

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