US3118988A - Electromagnetic relay with conductive core and conductive housing - Google Patents

Electromagnetic relay with conductive core and conductive housing Download PDF

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Publication number
US3118988A
US3118988A US183335A US18333562A US3118988A US 3118988 A US3118988 A US 3118988A US 183335 A US183335 A US 183335A US 18333562 A US18333562 A US 18333562A US 3118988 A US3118988 A US 3118988A
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US
United States
Prior art keywords
housing
armature
core
electrically conductive
wall
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Expired - Lifetime
Application number
US183335A
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English (en)
Inventor
Nitsch Rudolf
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 AG
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Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
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Publication of US3118988A publication Critical patent/US3118988A/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
    • H01H51/28—Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed
    • H01H51/287—Details of the shape of the contact springs

Definitions

  • the invention disclosed herein is concerned with an electro-magnetic relay comprising a sealed housing, made at least in part of metal, for accommodating the armature.
  • the metallic housing of a known relay of this kind contains elaborate contact devices, controlled by the armature, which render the construction complicated and greatly affect the spatial requirements thereof.
  • the object of the invention is to provide a relay of this kind which is of simple construction and requires relatively little space.
  • This object is achieved by utilizing the housing so as to serve as a relay contact, thereby reducing the expenditure for the required contact means.
  • Particular advantages are achieved upon constructing the housing, which receives the armature, in hermetically sealed manner, thereby reducing the number of lead-through means for establishing connections with the contact devices and therewith also reducing the number of points at which leaks can appear.
  • the expenditure, so far as contact devices are concerned, can be further reduced by utilizing the armature as electrical conductor. This is particularly true upon utilizing as a magnetic conductor at least one contact element which is disposed in insulated manner in a wall of the housing.
  • An electrically conductive connection between the armature and the housing can be effected in simple manner by journal-ling at a wall of the housing the armature, which is, for example, made in the form of a resilient lamella. It is, however, likewise possible to journal the armature by means of a spring which is fastened to a housing wall.
  • the relay according to the present invention can be constructed with only one contact element arranged in insulated relation with respect to a housing Wall and serving at the same time as a magnetic conductor, so that the number of lead-through means, extending into the interior of the housing, is reduced to the least possible number, namely, to one.
  • a relay having only one make contact may be constructed by the provision of an armature which establishes in its operative working position an electrically conductive connection between the housing and a contact element disposed in insulated relation with respect thereto. It is, however, also possible to equip a relay, constructed in accordance with the invention, with one make contact and one break contact, with the aid of a single lead-through extending into the enclosed space.
  • the armature can be journalled, for example, in the first housing part.
  • the part of the housing wall which cooperates with the armature can be provided with suitably formed stop means .
  • the armature which may be constructed, for example, by indenting the corresponding housing wall so as to form a boss.
  • FIG. 1 shows in cross-sectional representation a relay With a make contact
  • FIGS. 2 and 3 show in similar representation relays provided respectively with a break-make contact.
  • the relay represented in FIG. 1 comprises two metallic housing parts 1 and 2, made, for example, of iron, forming an enclosed space for the armature 5.
  • a pin-like contact element 4 which is fused thereto by a glass seal 3 and serves also as a magnetic conductor.
  • the armature 5 which also serves as an electrical conductor is journaled at the housing part 2 by means of a spring 6.
  • the pin 4, serving as a core, carries a magnetizing winding 7.
  • the angular metal sheet 8 provides for a flux return path respectively from the armature and housing, to the core pin 4.
  • the armature 5 Upon energization of the Winding 7, the armature 5 will be attracted by the pin-like core 4 and will thus establish electrical connection with the pin 4 which is disposed in insulated relation with respect to the housing.
  • the structure according to FIG. 1 operates as a make contact.
  • FIGS. 2 and 3 which correspond to parts shown in FIG. 1, are indicated by like reference numerals.
  • an intermediate member 14 connected with the housing part 1, upon which is disposed at second metallic housing part 9.
  • the electrically conductive armature .11 is journalled on the housing part 1 by means of a spring 12. In its illustrated position, the armature 11 engages a boss 13 formed by an indentation of the housing part 9, thereby forming a stop for contact engagement by the armature in the normal position thereof, thus producing an electrically conductive connection between the housing parts 9 and 1.
  • the armature 11 Upon energization of the magnetizing winding 7, the armature 11 will be attracted by the core pin 4.
  • the electrical connection between the housing parts 9 and l is thus interrupted, and connection is established between the housing part '1 and the core pin 4. The contact actuation therefore con-forms to that of a break contact.
  • a metallic housing part 14 is directly connected with the housing part 1, an electrically conductive pin 15 being fused to the part 14 by a glass seal 18.
  • the armature 16 is journalled on the housing part 14 by means of a spring 17. In the illustrated position of the armature 16 there is an electrical connection between the pin 15 and the housing. This connection is interrupted upon energization of the magnetizing Winding 7 and consequent alteration of the armature 16 while a connection is established between the core pin 4 and the armature 16, and therefore with the housing.
  • the structure operates in the nature of a breakmake contact.
  • An electromagnetic relay comprising means forming a sealed housing having a metallic electrically conductive wall, an elongated magnetically and electrically conductive member rigidly mounted adjacent one end of one wall of said housing in insulated relation thereto and extending therefrom, said member forming the magnet core of said relay with the adjacent end extending through the housing wall, an energizing winding encircling said core for magnetizing the latter responsive to current flowing through such winding, an elongated armature made of magnetizable and electrically conductive material, an
  • elongated spring for movably mounting said armature within said housing in electrically conductive relation with said metallic wall thereof, said spring being operative to support said armature for movement from a normal position into engagement with said core member responsive to flux created by said core member upon energization of said energizing winding, whereby said housing is utilized as a part of the contact means of said relay, and magnetically conductive means operatively extending from said housing to the .free end of said core member, forming a flux return path from the armature and housing to said core member.
  • An electromagnetic relay comprising means forming a housing having a first and a second wall, an insulating member interposed between said first and said second wall, a magnetically and electrically conductive member mounted on said first wall in insulated relation with respect thereto and extending therefrom, said member forming the magnet core of said relay, an energizing winding cooperatively disposed with respect to said core for magnetizing the latter responsive to current flowing 9 through such winding, an armature, made of magnet1zable and electrically conductive material, spring means mounting said armature within said housing in electrically conductive relation with said first wall, with said armature operative to move from a normal position into engagement with said core member responsive to flux created by said core member upon energization of said energizing winding, and a boss formed on said second wall for engagement with said armature in the normal position thereof, whereby said second wall is in normal position of said armature electrically interconnected with said first wall, with said housing being utilized as part of the contact means of said relay.
  • An electromagnetic relay comprising means forming a sealed housing, a magnetically and electrically conductive member mounted on a first wall of said housing in insulated relation thereto and extending therefrom, said member forming the magnet core of said relay, an energizing winding cooperatively disposed with respect to said core for magnetizing the latter responsive to current flowing through such winding, an armature, made of magnetizable and electrically conductive material, spring means movably mounting said armature within said housing on said second wall in electrically conductive relation therewith, with said armature operating to move from a normal position into engagement with said core member responsive to flux created by said core member upon energization of said energizing winding, whereby said housing is utilized as part of the contact means of said relay, and a conductor carried by said second housing wall in insulated relation with respect thereto, said armature being normally in engagement with said conductor.
  • An electromagnetic relay comprising a plurality of parts forming a closed housing having a first and a second housing part made at least partially of metal, insulating parts disposed between the first and the second housing part and separating said housing parts electrically, a magnet core, made in the form of a pin of magnetizable and electrically conductive material, mounted in the first housing part in electrically insulated relation with respect thereto, one pole of the pin-like core extending into the housing and the remaining part thereof projecting from the housing, a magnetizing winding mounted on the portion of the magnet core projecting from the housing for magnetizing the core, a magnetizable and electrically conductive armature disposed within the housing, means forming a stop arranged at the second housing part for cooperation with said armature, spring means fastened to the first housing part, said armature being supported by said spring means and electrically conductively connected thereby with the first housing part and establishing in its normal position, by contact with the stop, an electrical connection between the first and the second housing part, said armature being
  • An electromagnetic relay comprising, a plurality of parts forming a closed housing having a first and a second housing part made at least partially of metal, a pinlike magnet core made of magnetizable and electrically conductive material and fastened in the first housing part in electrically insulated relation with respect thereto, one of the ends of said magnet core projecting into the closed housing and the remaining part thereof projecting from the housing, a magnetizing winding disposed exteriorly of the housing and mounted upon the part of the pin-like core projecting from the housing and being operative upon energization thereof to magnetize said core, a contact element connected with the second housing part in electrically insulated relation with respect thereto, part of said contact element projecting into the housing and the remaining part thereof extending from the housing to provide a terminal therefor, an armature made of magnetizable and electrically conductive material, spring means within the housing connected with said armature and one housing part, and electrically connecting said armature with the housing, said armature establishing in its normal position, by engagement with the contact element

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Breakers (AREA)
US183335A 1961-03-29 1962-03-26 Electromagnetic relay with conductive core and conductive housing Expired - Lifetime US3118988A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES73211A DE1209205B (de) 1961-03-29 1961-03-29 Electromagnetisches Relais mit gekapseltem Anker

Publications (1)

Publication Number Publication Date
US3118988A true US3118988A (en) 1964-01-21

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ID=7503735

Family Applications (1)

Application Number Title Priority Date Filing Date
US183335A Expired - Lifetime US3118988A (en) 1961-03-29 1962-03-26 Electromagnetic relay with conductive core and conductive housing

Country Status (7)

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US (1) US3118988A (da)
BE (1) BE615707A (da)
CH (1) CH392689A (da)
DE (1) DE1209205B (da)
DK (1) DK108460C (da)
GB (1) GB965478A (da)
NL (1) NL276520A (da)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3325755A (en) * 1966-04-12 1967-06-13 Jr Robert Lee Peek Tubular electromagnetic relay having a spring armature
US3331040A (en) * 1963-05-13 1967-07-11 Int Standard Electric Corp Miniature diaphragm relay
JPS5035673A (da) * 1973-07-20 1975-04-04

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2258922C3 (de) 1972-12-01 1980-03-06 Standard Elektrik Lorenz Ag, 7000 Stuttgart Magnetisch betätigbarer, abgeschlossener Kontakt mit einem flachen Gehäuse

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1375983A (en) * 1917-10-11 1921-04-26 Gen Electric Electric switching device
US2103929A (en) * 1934-12-26 1937-12-28 Herbert E Bucklen Switch
US2848661A (en) * 1955-02-08 1958-08-19 Brion Leroux & Cie Miniature electromagnetic relay

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE699682C (de) * 1937-03-18 1940-12-04 Siemens & Halske Akt Ges Schalteinrichtung oder Vakuumschalter, dessen Kontaktschluss durch eine aeussere magnetische Schaltkraft bewirkt wird

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1375983A (en) * 1917-10-11 1921-04-26 Gen Electric Electric switching device
US2103929A (en) * 1934-12-26 1937-12-28 Herbert E Bucklen Switch
US2848661A (en) * 1955-02-08 1958-08-19 Brion Leroux & Cie Miniature electromagnetic relay

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3331040A (en) * 1963-05-13 1967-07-11 Int Standard Electric Corp Miniature diaphragm relay
US3325755A (en) * 1966-04-12 1967-06-13 Jr Robert Lee Peek Tubular electromagnetic relay having a spring armature
JPS5035673A (da) * 1973-07-20 1975-04-04
JPS5520628B2 (da) * 1973-07-20 1980-06-04

Also Published As

Publication number Publication date
GB965478A (en) 1964-07-29
CH392689A (de) 1965-05-31
NL276520A (da)
DK108460C (da) 1967-12-18
BE615707A (fr) 1962-09-28
DE1209205B (de) 1966-01-20

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