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US2754390A - Electromagnetic relay - Google Patents

Electromagnetic relay Download PDF

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Publication number
US2754390A
US2754390A US266264A US26626452A US2754390A US 2754390 A US2754390 A US 2754390A US 266264 A US266264 A US 266264A US 26626452 A US26626452 A US 26626452A US 2754390 A US2754390 A US 2754390A
Authority
US
United States
Prior art keywords
armature
iron core
edge
core
electromagnetic relay
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
US266264A
Other languages
English (en)
Inventor
Diesen Anton Kristian
Johnson Karl Georg
Wiberg Eric Axel
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Application granted granted Critical
Publication of US2754390A publication Critical patent/US2754390A/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
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/34—Means for adjusting limits of movement; Mechanical means for adjusting returning force

Definitions

  • the present invention relates to such electromagnetic relays as have an armature going along the iron core.
  • the object of the invention is to obtain a simple and cheap relay by simplifying the device for the suspension of the armature. According to the invention this is achieved by having the armature, which is cradled against an edge at one of the ends of the iron core, both press against the edge and be kept in its unactuated position by means of stretching means located in the other end of the iron core.
  • Figs. 1 and 2 show side-views of two different embodiments of a relay.
  • Figs. 3 and 4 are cross-sections along the lines A-A and 3-13 respectively of the relays according to the Figs. 1 and 2.
  • Fig. 5 shows how several relays can be mounted beside each other on a common supporting bar.
  • the electromagnetic relay shown in Fig. 1 has an armature 11, which is going along the iron core and is cradled against an edge 12 at the back end of the iron core.
  • armature 11 At the front end of the iron core there is a spring 13, one terminal of which is fastened to an adjustable screw 14 on the iron core, the spring being arranged to exert such an attraction on the armature, that it both presses the armature against the edge 12 by means of its back portion 17 and keeps it in the unactuated position shown in Fig. 1.
  • the distance of the armature to the iron core can be adjusted.
  • the winding 19 of the armature is energized, the front portion of the armature is drawn upwards towards the iron core, the lifting screw 15 thereby also being drawn upwards and lifting the actuating means 21 of the contact springs 20, so that the illustrated four closed contacts are broken.
  • the edge 12 against which the back portion of the armature presses consists of two side pieces 16 placed on both sides of the iron core 10 as appears from Fig. 3. By means of screws 31, 32 the side pieces and therewith also the edge 12 are fastened to the iron core.
  • the edge has been placed so, that a line drawn from the edge to the upper surface of the lifting screw 15 on the nut 18, Fig. 1, is chiefly parallel to the longitudinal axis or central line 33 of the iron core.
  • the two ends of the iron core 10 are at the parts lying nearest to the armature 11, shaped as magnetic poles for the armature, said poles attracting the armature in the same direction as it actuates.
  • the embodiment of the relay shown in Figs. 2 and 4 ditfers from the one shown in Figs. 1 and 3 only by the connection of the contact spring set and the iron core to each other.
  • the contact springs shown in Figs. 1 and 3 are arranged in a set which is directly fixed to the back end of the iron core by means of a screw 22, Figs. 1 and 3. There are 2,754,390 Patented. July 10, 1956 two further screws 23 and 24 for guiding the contact springs in the set. At the front end of the iron core the contact spring set is guided by a recess in a flange 25 on the iron core.
  • the contact springs 40 according to Figs. 2 and 4 are fixed by means of studs 41 on guiding flanges 42 of'insulating material, no layers separating the springs.
  • the iron core 50 and the side pieces 56 are fixed by means of screws 51, 52.
  • the shown side-pieces 16 and 56 are provided with recesses 57 to allow single relays to be fixed to a supporting rib 58, Figs. 1, 2 and 5, common to one or several relays.
  • a supporting rib is not shown in Figs. 3 and 4.
  • a relay mounted on said supporting rib is shown; it is fixed by means of the screw 59 shown in Figs. 1 and 2.
  • other relays can be fixed to the supporting bar according to Fig. 5 at the shown recesses 60 and similar, not shown recesses, located beside the shown ones.
  • An electromagnetic relay comprising an actuating coil having an iron core and an elongated armature having an offset hook portion at one end, a core member having two ends, a first edge at one end of said core engaged by said hook portion of said armature, resilient tension means at the other end of said armature connected to the other end of said core to exert a pull to keep said hook portion of the armature in engagement with the pivot edge and to exert a pivotal force biasing the other end of the armature away from said core, a plurality of contact springs, a lifting screw on the said other end of said armature piercing a portion of said core member and having an adjusting nut, actuating means on said contact springs extending toward said lifting screw, the said adjusting nut acting to limit the unenergized position of said armature.
  • a relay comprising in combination an electromagnet, an iron core in said electromagnet, an elongated armature extending parallel to said core and adapted to be attracted thereto, means on one end of said electromagnet forming an edge adjacent one end of said iron core, said armature having one end thereof bent to be pivotally received by said edge, an element secured to the other end of said core forming an obtuse angle therewith and extending beyond the other end of said armature, a spring resiliently joining between the distal end of said element and the said other end of said armature to apply a tension force thereto and simultaneously press the said one end of said armature against said edge to bias the said other end of said armature away from said core, a plurality of contact springs arranged to be actuated by motion of said armature, a lifting screw fixed on the said other end of said armature piercing said core and having an enlarged member thereon to engage the core and limit the motion of said armature when the electromagnet is unenergized

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Breakers (AREA)
US266264A 1951-01-22 1952-01-14 Electromagnetic relay Expired - Lifetime US2754390A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE701071X 1951-01-22

Publications (1)

Publication Number Publication Date
US2754390A true US2754390A (en) 1956-07-10

Family

ID=20315474

Family Applications (1)

Application Number Title Priority Date Filing Date
US266264A Expired - Lifetime US2754390A (en) 1951-01-22 1952-01-14 Electromagnetic relay

Country Status (6)

Country Link
US (1) US2754390A (nl)
BE (1) BE508412A (nl)
DE (1) DE921706C (nl)
FR (1) FR1049127A (nl)
GB (1) GB701071A (nl)
NL (2) NL166822B (nl)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2864913A (en) * 1954-04-09 1958-12-16 Siemens Ag Relay contact arrangement and operation
US2901568A (en) * 1957-04-26 1959-08-25 Justin B Goff Snap-action switch
US2911508A (en) * 1955-06-03 1959-11-03 Vigren Sten Daniel Contact spring set

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1074124B (de) * 1960-01-28 Siemens S. Halske Aktiengesell schaft Berlin und München Kon taktfedersatz insbesondere fur Einrich tungen der Nachrichten vermittlungstechnik

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1645897A (en) * 1922-03-16 1927-10-18 Crowe Douglas Cormack Electromagnetic relay
US2077091A (en) * 1934-02-23 1937-04-13 Brander Bertil Johan Electric relay
US2107848A (en) * 1936-11-14 1938-02-08 Utah Radio Products Company Circuit controlling device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1645897A (en) * 1922-03-16 1927-10-18 Crowe Douglas Cormack Electromagnetic relay
US2077091A (en) * 1934-02-23 1937-04-13 Brander Bertil Johan Electric relay
US2107848A (en) * 1936-11-14 1938-02-08 Utah Radio Products Company Circuit controlling device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2864913A (en) * 1954-04-09 1958-12-16 Siemens Ag Relay contact arrangement and operation
US2911508A (en) * 1955-06-03 1959-11-03 Vigren Sten Daniel Contact spring set
US2901568A (en) * 1957-04-26 1959-08-25 Justin B Goff Snap-action switch

Also Published As

Publication number Publication date
NL77294C (nl)
FR1049127A (fr) 1953-12-28
DE921706C (de) 1954-12-23
BE508412A (nl)
NL166822B (nl)
GB701071A (en) 1953-12-16

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